Variable resistor

Details Variable resistor Variable resistor

1999-02-25

2000-03-21

Donovan, Lincoln

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338162, 338164, 338166, H01C 1030

Patent

active

060407573

ABSTRACT:
Slack in the engagement of a shaft 5 and a rotor 3 in a case 1 is prevented by the resiliency of an O ring 6 under radial but not axial compression. Even if heat stress is added, the variable resistor which can secure air-tightness is provided. The rotor 3 and a slider 4 are accommodated in the case 1. A resistance substrate 2 having a collector electrode 25 formed on the central portion of the surface and a circular resistor 24 formed concentrically on the periphery of the collector electrode 25 is engaged with the lower end part of the case 1. A stepped surface 12 supporting the peripheral surface and the bottom surface of the O ring 6 is formed on the upper surface of the case. A boss portion 55 contacting the inner circumference of the O ring 6 and an operating portion 51 projecting on the upper surface of the case 1 and covering the stepped surface 12 is formed on the shaft 5. The inner and outer circumferences of the O ring 6 are pressed and contacted with the stepped surface 12 of the case and the boss portion 55 of the shaft 5. A gap .delta. is provided between either upper or lower end surface of the O ring 6 and the stepped surface 12 or the bottom surface of the operating portion 51.

REFERENCES:
patent: 3579169 (1971-05-01), Dickinson
patent: 3631371 (1971-12-01), Maurice
patent: 3654581 (1972-04-01), Franz, Jr.
patent: 4109230 (1978-08-01), Frey, Jr.
patent: 4329676 (1982-05-01), McDonald et al.

Affiliated with

Also associated with

Rating

Variable resistor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable resistor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable resistor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-733628